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30-378 reloading?

 
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  #15  
Old 07-09-2011, 11:12 PM
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Location: NW MT
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Re: 30-378 reloading?

Thread was 2-3 yrs. old. Steve is now shooting 30-338 LAI
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  #16  
Old 11-02-2014, 12:52 PM
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Join Date: Nov 2014
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Re: 30-378 reloading?

Hello. I am new to the forum, but have been lurking for a while now.

I have been reloading for a number of years, but recently began having trouble with my .30-378 loads. Specifically, when I attempt to seat the bullet, it is so loose I can almost pull it back out with my fingers.

I thought it may be a problem with my sizing die, and replaced it with a new one, only to have the problem continue to occur.

I am using Redding type S bushing neck sizing dies. My brass is Weatherby brass, and I have cycled (shot) the brass 3 times now. I first experienced the problem trying to seat Barnes TSX bullets, and also experience it using Nosler bullets.

I am not sure what I am doing wrong. BTW, I load several types of .30's, and do not experience this with my other loads.

Any advice? If additional information helps, and I have omitted it, please ask.
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  #17  
Old 11-02-2014, 01:08 PM
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Re: 30-378 reloading?

With the bushing dies you need to use the right bushing or your neck tension will be out of whack. Every lot of brass has different neck thickness so you'll need to neck turn or use different bushings to match each lot of brass. Measure a loaded round to get the final outside neck diameter and then use a bushing .002-.003 smaller. Assuming you remembered to put the bushing in there I would guess that your current batch of brass has fairly thin necks.
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  #18  
Old 11-02-2014, 03:41 PM
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Re: 30-378 reloading?

Thank you for your reply. I now have a few more questions -

How do I know (or determine) which size bushing came with the factory dies?

I measured the neck diameter of some of my old 1x loaded rounds. A 20 round sample was 100% .333 These are my reference bullets.

I measured the neck diameter of the six (6) I was able to successfully load this morning and the smallest average diameter was .332

If I understand correctly, I simply subtract 0.001" from the cartridge that had the smallest average measurement, to allow for a slight amount of spring back and create a proper press fit for the bullet. That means I should buy a bushing of .331. Correct?

Redding's website says .001, you say .002 - .003

Should I bracket this .331, and also buy a .330 and a .332? Or .329, .328 using your guidance?

Thank you again for your help. Thoughts?
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  #19  
Old 11-02-2014, 04:02 PM
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Join Date: Oct 2007
Location: Flat Rock, Michigan, USA
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Re: 30-378 reloading?

I would use them on targets of opportunity or long range practice.
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  #20  
Old 11-02-2014, 04:25 PM
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Join Date: Nov 2014
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Re: 30-378 reloading?

Quote:
Originally Posted by LONGSHOOTER View Post
I would use them on targets of opportunity or long range practice.
I am sorry, I do not understand. What are you referring to when you wrote "...use them on targets of opportunity or long range practice"?
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  #21  
Old 11-02-2014, 05:17 PM
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Join Date: Oct 2007
Location: Flat Rock, Michigan, USA
Posts: 137
Re: 30-378 reloading?

David,

You are off topic with your post. Read the opening post of this thread, on page one.
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